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🏆 FlagshipPremium

GPT-5.5 Instant

by OpenAI

Latest Instant-class ChatGPT model with stronger factuality, clearer answers, and improved personalization via the chat-latest API alias.

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Input Price

$5

per 1M tokens

Output Price

$30

per 1M tokens

Context Window

1,050K

tokens (128K max output)

Specifications

Release Date2026-05-05
Category🏆 Flagship
Context Window1,050,000 tokens
Max Output128,000 tokens
ProviderOpenAI
Input Cost$5 / 1M tokens
Output Cost$30 / 1M tokens
Price TierPremium

Capabilities

textvisioncodereasoning

Related Use Cases

🤖

AI Agent / Agentic Workflows

Calculate the cost of running AI agents that use tools, make decisions, and complete multi-step tasks.

~10,000 in · ~3,000 out
💬

AI Chatbot

Calculate the API cost of running a customer support or conversational AI chatbot.

~2,000 in · ~500 out
📄

Document Summarizer

Calculate how much it costs to summarize documents, reports, and articles with AI.

~8,000 in · ~1,000 out
💻

AI Code Assistant

Calculate the cost of building an AI-powered coding assistant or copilot.

~4,000 in · ~2,000 out
✍️

Content Generation

Calculate the cost of generating blog posts, marketing copy, and articles with AI.

~1,500 in · ~3,000 out
🖼️

Image Analysis

Calculate the cost of analyzing images with AI vision models.

~6,000 in · ~500 out

Monthly Cost Estimates

Usage LevelDaily TokensDailyMonthlyYearly
Light~50 requests/day100K in / 20K out$1.10$33.00$402
Medium~200 requests/day500K in / 100K out$5.50$165.00$2008
Heavy~1K requests/day2,000K in / 500K out$25.00$750.00$9125
Enterprise~5K requests/day10,000K in / 2,000K out$110.00$3300.00$40150

Cost Calculator

Alternatives to GPT-5.5 Instant

💰 Cheaper Options

Claude Opus 4.5Anthropic
14% cheaper
$5/M in · $25/M out
Claude Opus 4.6Anthropic
14% cheaper
$5/M in · $25/M out
Claude Opus 4.7Anthropic
14% cheaper
$5/M in · $25/M out
Grok 3xAI
49% cheaper
$3/M in · $15/M out

🚀 More Powerful

GPT-4 TurboOpenAI
14% more
$10/M in · $30/M out
o3 Deep ResearchOpenAI
43% more
$10/M in · $40/M out
o1OpenAI
114% more
$15/M in · $60/M out
Claude Opus 4Anthropic
157% more
$15/M in · $75/M out

Frequently Asked Questions

How much does GPT-5.5 Instant API cost per million tokens?▼
GPT-5.5 Instant costs $5 per million input tokens and $30 per million output tokens as of 2026. These are the standard API rates from OpenAI.
What is the GPT-5.5 Instant context window?▼
GPT-5.5 Instant supports a 1.05M context window (1,050,000 tokens), which means you can process up to 1.05M tokens in a single API call.
How much does GPT-5.5 Instant cost per month?▼
At medium usage (~200 requests/day with 500K input and 100K output tokens/day), GPT-5.5 Instant costs approximately $165.00/month. Light usage runs about $33.00/month, and heavy usage (~1K requests/day) around $750.00/month.
Is there a cheaper alternative to GPT-5.5 Instant?▼
Yes — Claude Opus 4.5 by Anthropic is a cheaper option at $5/M input tokens vs $5/M for GPT-5.5 Instant. Other budget alternatives include models in the efficient tier.
Is GPT-5.5 Instant good for ai agent / agentic workflows?▼
GPT-5.5 Instant is a flagship model with support for text, vision, code. For ai agent / agentic workflows, it offers 1.05M context and costs $5/M input tokens — a mid-range option for this use case.

GPT-5.5 Instant Comparisons

codex mini latest vs gpt 5 5 instantgpt 5 5 instant vs o4 mini deep researchgpt 5 5 instant vs o3 deep researchgpt 5 2 vs gpt 5 5 instantgpt 5 2 pro vs gpt 5 5 instantgpt 5 5 vs gpt 5 5 instantgpt 5 5 instant vs gpt 5 5 progpt 5 4 pro vs gpt 5 5 instant

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